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Geometry
Getting started
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Lines
naming simple geometric figures (8:52)
length of a line segment (7:38)
line segments, slope and midpoint (6:08)
line segments, parallel, perpendicular or neither (11:39)
distance between two points in two dimensions (6:35)
distance between two points in three dimensions (4:22)
midpoint of a line segment in three dimensions (2:26)
Angles
measures of angles (8:33)
measures of angles with algebra (6:28)
adjacent and nonadjacent angles (6:09)
angles of transversals (12:46)
interior angles of polygons (8:14)
exterior angles of polygons (7:51)
Triangles
45-45-90 triangles (10:53)
30-60-90 triangles (10:06)
perpendicular and angle bisectors (5:43)
circumscribed and inscribed circles of a triangle (4:47)
interior angles of triangles (8:51)
Quadrilaterals
measures of quadrilaterals (12:41)
measures of parallelograms (6:27)
Circles
equation of a circle (6:47)
degree measure of an arc of a circle (6:49)
arc length (6:09)
inscribed angles of circles (8:35)
vertex on, inside and outside the circle (12:14)
tangent lines of circles (7:58)
intersecting tangents and secants (6:51)
intersecting chords (4:00)
Area and perimeter
area of a rectangle (8:47)
area of a rectangle using sums and differences (2:46)
perimeter of a rectangle (7:32)
area of a parallelogram (4:55)
area of a trapezoid (7:20)
area of a triangle (5:16)
finding perimeter using the pythagorean theorem (5:06)
area of a circle (8:32)
circumference of a circle (5:25)
Volume and surface area
nets, volume and surface area of prisms (18:02)
surface area to volume ratio of prisms (8:20)
diagonal of a right rectangular prism (6:05)
nets, volume and surface area of pyramids (14:44)
nets, volume and surface area of cylinders (15:30)
nets, volume and surface area of cones (12:14)
volume and surface area of spheres (9:32)
Pythagorean theorem
pythagorean theorem (3:07)
pythagorean inequalities (5:13)
Transformations
translating figures in coordinate space (6:55)
rotating figures in coordinate space (9:54)
reflecting figures in coordinate space (10:27)
translation vectors (4:33)
Congruence
congruent angles (9:54)
triangle congruence with sss, asa, sas (8:37)
triangle congruence with aas, hl (7:08)
isosceles triangle theorem (7:10)
cpctc (4:32)
Similarity
similar triangles (4:52)
triangle similarity statements (9:06)
triange side-splitting theorem (4:24)
midsegments of triangles (8:52)
midsegments of trapezoids (7:53)
Logic
conditionals and euler diagrams (3:11)
converses of conditionals (4:30)
arranging conditionals in a logical chain (4:12)
Final exam
geometry final exam
exterior angles of polygons
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